26.
23. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications.
. only competent people may work ‘live’
d. one may work ‘live’
c. IPX7 protection
d.
22. protected additionally RCD
d. earth fault loop impedance
c.
21. All final circuits bathroom, both power and lighting, must have:
a. protected from overcurrent
c. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom. polarity test. everyone may work ‘live’
b.
27. Every caravan pitch must have least one 16A socket outlet for
connection caravan. RCD protection
c.
20. the industrial type
b.
25. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply.
24. The socket outlet must be:
a. overcurrent protection
b. only instructed and skilled people may work ‘live’. buried depth 600mm. Zone protection. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19. functional test
d. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a. continuity test
b. The Electricity Work Regulations state that:
a
